TROUBLESHOOTING CHART
NOTE:
Troubleshooting problems may have similar causes and solutions.
PROBLEM POSSIBLE
CAUSE
SOLUTION
Tank drain valve is open
Close tank drain valve.
Fittings Leak
Check fittings with soapy water. Tighten or reseal leaking
fittings. DO NOT OVERTIGHTEN.
Restricted air intake
Clean or replace air filter element.
Prolonged excessive use of air
Decrease amount of air used.
Compressor not large
enough
Check air requirement of accessory. If it is higher than
CFM and pressure supplied by compressor, you need a
larger compressor. Most accessories are rated at 25% of
actual CFM while running continuously.
Hole in air hose
Check and replace if necessary.
Tank leaks
WARNING
：
Immediately replace tank. DO NOT attempt to repair.
Blown seals
Replace compressor assembly.
Valve leaks
Replace compressor assembly.
Low pressure or
not enough air or
compressor does
not stop
Leaking or worn piston
Replace compressor assembly.
Air leaks from
regulator, or
regulator does not
regulate pressure
Dirty or damaged
regulator internal parts.
Replace regulator or internal parts.
This is normal
If pressure drops to low, adjust regulator while accessory is used.
Regulated
pressure gauge
reading drops
when air
accessory is
being used
Compressor not large
enough
Check air requirement of accessory. If it is higher than
CFM and pressure supplied by compressor, you need a
larger compressor. Most accessories are rated at 25% of
actual CFM while running continuously.
Tank pressure exceeded
normal rating pressure
Replace pressure switch
Pressure relief
valve opens
Pressure switch stuck
Replace pressure switch
Tank pressure exceeds
preset pressure switch
limit
Motor will start automatically when tank pressure drops
below kick-in pressure of pressure tank.
Motor overload protection
has tripped
Let motor cool off and overload switch will automatically
reset. This may take several minutes.
Replace blown fuse or reset circuit breaker. Do not use
fuse or circuit breaker with higher rating than specified for
you branch circuit.
Check for proper fuse; "Fusetron" type T is acceptable.
Check for low voltage and proper extension cord size.
Fuse blown or circuit
breaker tripped
Disconnect other applications from circuit. Operate
compressor on a dedicated circuit.
Check have stuck open
Remove and clean or replace.
Pressure bleeder valve
on pressure switch has
not unloaded head
pressure
Bleed line by moving pressure switch lever to OFF position
before restarting. If bleeder valve does not open, replace
bleeder valve.
Wrong wire gauge in cord
or excessive extension
cord length
Check for proper gauge and extension cord length.
Loose electrical connections
Contact authorized service center.
Possible defective Capacitor
Contact authorized service center.
Paint spray on internal
motor parts
Have checked at service center. Do not operate
compressor in the paint spray area.
Motor will not run
Possible defective motor
Have checked at service center.
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